Activists in Germany rally against Donald Trump

Protestors are tearing down a so called 'Trump's wall of hate' as part of a demonstration against Republican presidential candidate Donald Trump in front of the Brandenburg Gate at the Pariser Platz in Berlin, Germany, Friday, Sept. 23, 2016. (AP Photo/Markus Schreiber) (The Associated Press)

A woman with the face painted half and half with United States and German flag attends a protest where they are tearing down a so called 'Trump's wall of hate' as part of a demonstration against Republican presidential candidate Donald Trump at the Pariser Platz in Berlin, Germany, Friday, Sept. 23, 2016. (AP Photo/Markus Schreiber) (The Associated Press)

An activist group built a wall in Berlin featuring the face of Donald Trump, then tore it down in a rally to encourage Americans overseas to vote against the Republican presidential candidate.

The group Avaaz built the cardboard-block wall Friday at the landmark Brandenburg Gate, not far from the spot where former President Ronald Reagan once famously called for Soviet leader Mikhail Gorbachev to "tear down this wall."

The ersatz wall carried an image of Trump and the message: "United to Stop Trump."

Campaigner Meredith Alexander called Americans abroad the "secret swing state" and says her group is trying to ensure all eligible voters get and file their absentee ballots.

She says "there about 8 million of us who live oversees," but in the last election only 12 percent voted.